Part-number relationships
| Relationship | Reference family | Number |
|---|---|---|
| Primary Manufacturer Part Number | Cat separator-housing reference | 523-4986 |
| Related Filter Element - Not Interchange | Separate element installed in housing | 523-4987 |
Excavator Filters
523-4986 Fuel Water Separator Housing for Cat 320 323 326 330 Excavators
1 product photo · Swipe on mobile, or hover and select a thumbnail.
OEM / reference523-4986
SpecificationNylon Fuel and Water Separator Housing
Catalog ID77932155
Caterpillar identifies 523-4986 as a nylon fuel-and-water separator housing with 4.25-7 STUB ACME and 1/2-20 STOR port threads. Official compatible-model data includes 320, 323, 325, 326, 330, 333, 335, 336, 340, 345 and 350 excavator arrangements, M-series wheeled excavators, MH material handlers and 950/962 wheel loaders. The filter element is a separate component. Confirm the housing number, threads and ports, drain/sensor arrangement, machine model and serial.
- Product Type
- Fuel and Water Separator Housing
- Material
- Nylon
- Main Thread
- 4.25-7 STUB ACME
- Port Thread
- 1/2-20 STOR
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
Product fitment guide
Part numbers and compatible models
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Reference numbers
Primary number
Direct interchange
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Nylon Fuel and Water Separator Housing
- Category
- Excavator Filters
- Catalog ID
- 77932155
- Photo views
- 1
Before ordering
Confirm these details
- Match the complete part number on the original component.
- Compare connectors, mounting points and visible dimensions with the product photos.
- Confirm the exact machine or engine model and serial range before ordering.
Machine fitment
Compatible model references
3 model references
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
Quick fitment answers
Common questions about 523-4986
Which machines use 523-4986?
Recorded compatible model references include Excavator families: Cat 320 / 323 / 325 / 326 / 330 / 333 / 335 / 336 / 340 / 345 / 350 arrangements, Additional official families: M-series wheeled excavators; MH material handlers; 950 / 962 wheel loaders, Fitment limitation: Confirm housing number, threads, ports, drain/sensor, model and serial. Confirm the complete part number and machine serial range before ordering.
What numbers are documented for 523-4986?
Documented direct interchanges: 523-4987.
How do I confirm 523-4986 before ordering?
Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.
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